With Android 4.3 and earlier, gray/white signal icons in the notification bar informed about connection trouble concerning the Google Services (see e.g. What does it mean when the connectivity icons in the status bar go white/gray?). If everything was OK, they were either green (before 4.x) or blue (4.0+). Now they seem to be permanently gray/white. Am I in trouble, or did I miss something?
You are (not) in trouble. Or at least you cannot tell anymore by simply taking a look at the notification bar. With Android 4.4 (KitKat) came a few design changes; one of them was to turn those notification icons permanently gray, officially to be "less distracting".
So how can you tell if there are issues with your connection to the Google servers? According to an AndroidPIT Blog, you now have to check with the Quick-Settings, where problems are indicated by icons turned red/orange.